Online Tool Store
Stock Profit Calculator
Calculate net profit and return on investment for a stock trade, including buy/sell prices, share count, and trading fees. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Total invested
$0
Net profit
$0
Return
0%
How it works
- Enter your buy price, sell price, and number of shares.
- Add any trading fees.
- Net profit and return on investment update instantly.
The formula
Profit is the sale proceeds minus the original investment and fees:
Profit = (Sell price × shares) − (Buy price × shares) − Fees
ROI = Profit ÷ (Buy price × shares) × 100
FAQ
Does this include taxes?
No — it only accounts for the trading fees you enter, not capital gains tax, which depends on your jurisdiction and holding period.
What should I put in the fees field?
Add up any brokerage commissions or trading fees for both the buy and sell trade. Leave it at 0 if your broker doesn't charge per-trade fees.
How is return on investment calculated?
As net profit (after fees) divided by the total amount invested, shown as a percentage.
Is my trade data uploaded anywhere?
No — every calculation happens locally in your browser.
How we compare
| Feature | Online Tool Store | Brokerage app | Manual math |
|---|---|---|---|
| Check a hypothetical trade before making it | ✓ | ✗ | ✓ |
| Instant ROI percentage | ✓ | ✓ | ✗ |
A brokerage app only shows profit on trades you've actually made. Stock Profit Calculator lets you check a hypothetical trade before you commit.